16801980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1657}}^1$

素因数の和:1695

約数の個数: 72

約数和(自身を含む): 50973552

約数和(自身を除く): 34171572

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 169, 195, 260, 338, 390, 507, 676, 780, 845, 1014, 1657, 1690, 2028, 2535, 3314, 3380, 4971, 5070, 6628, 8285, 9942, 10140, 16570, 19884, 21541, 24855, 33140, 43082, 49710, 64623, 86164, 99420, 107705, 129246, 215410, 258492, 280033, 323115, 430820, 560066, 646230, 840099, 1120132, 1292460, 1400165, 1680198, 2800330, 3360396, 4200495, 5600660, 8400990, 16801980]

約数ペア:

[(1, 16801980), (2, 8400990), (3, 5600660), (4, 4200495), (5, 3360396), (6, 2800330), (10, 1680198), (12, 1400165), (13, 1292460), (15, 1120132), (20, 840099), (26, 646230), (30, 560066), (39, 430820), (52, 323115), (60, 280033), (65, 258492), (78, 215410), (130, 129246), (156, 107705), (169, 99420), (195, 86164), (260, 64623), (338, 49710), (390, 43082), (507, 33140), (676, 24855), (780, 21541), (845, 19884), (1014, 16570), (1657, 10140), (1690, 9942), (2028, 8285), (2535, 6628), (3314, 5070), (3380, 4971)]